From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Sat, 18 May 2002 15:26:15 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Sat, 18 May 2002 15:26:15 -0400 Received: from tom.hrz.tu-chemnitz.de ([134.109.132.38]:56848 "EHLO tom.hrz.tu-chemnitz.de") by vger.kernel.org with ESMTP id ; Sat, 18 May 2002 15:26:14 -0400 Date: Sat, 18 May 2002 21:26:06 +0200 From: Ingo Oeser To: Benjamin Herrenschmidt Cc: Andre Hedrick , linux-kernel@vger.kernel.org, linux-ide@vger.kernel.org Subject: Re: IO/MMIO 2.4 ATA/IDE driver recore near complete Message-ID: <20020518212606.H635@nightmaster.csn.tu-chemnitz.de> In-Reply-To: <20020517031515.20062@smtp.wanadoo.fr> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.2i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Fri, May 17, 2002 at 04:15:15AM +0100, Benjamin Herrenschmidt wrote: > >Please note BMDMA for MMIO is not native since there appears to be > >pci-posting errors under x86. > > Can you elaborate ? I had to deal with driver bugs related to > PCI wr. posting in the past. I assume you know what you are doing, > but just in case, you missed a SW bug, I may be able to help. I'm also interested in these issues, since I plan to use BMDMA into MMIO areas in my own driver. So maybe we should discuss this on the list? ;-) Also the machines/chipsets, where this happens would be nice to know. How to detect and workaround such errors is another challenging topic I would like to discuss. Thanks and Regards Ingo Oeser -- Science is what we can tell a computer. Art is everything else. --- D.E.Knuth